1 files changed, 20 insertions, 4 deletions

diff --git a/init/main.c b/init/main.c
index 85d69dffe864..63534a141b4e 100644
--- a/init/main.c
+++ b/init/main.c
@@ -70,6 +70,8 @@
 #include <linux/perf_event.h>
 #include <linux/file.h>
 #include <linux/ptrace.h>
+#include <linux/blkdev.h>
+#include <linux/elevator.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
@@ -604,7 +606,7 @@ asmlinkage void __init start_kernel(void)
         pidmap_init();
         anon_vma_init();
 #ifdef CONFIG_X86
-        if (efi_enabled)
+        if (efi_enabled(EFI_RUNTIME_SERVICES))
                 efi_enter_virtual_mode();
 #endif
         thread_info_cache_init();
@@ -632,7 +634,7 @@ asmlinkage void __init start_kernel(void)
         acpi_early_init(); /* before LAPIC and SMP init */
         sfi_init_late();
 
-        if (efi_enabled) {
+        if (efi_enabled(EFI_RUNTIME_SERVICES)) {
                 efi_late_init();
                 efi_free_boot_services();
         }
@@ -794,6 +796,17 @@ static void __init do_pre_smp_initcalls(void)
                 do_one_initcall(*fn);
 }
 
+/*
+ * This function requests modules which should be loaded by default and is
+ * called twice right after initrd is mounted and right before init is
+ * exec'd.  If such modules are on either initrd or rootfs, they will be
+ * loaded before control is passed to userland.
+ */
+void __init load_default_modules(void)
+{
+        load_default_elevator_module();
+}
+
 static int run_init_process(const char *init_filename)
 {
         argv_init[0] = init_filename;
@@ -802,7 +815,7 @@ static int run_init_process(const char *init_filename)
                 (const char __user *const __user *)envp_init);
 }
 
-static void __init kernel_init_freeable(void);
+static noinline void __init kernel_init_freeable(void);
 
 static int __ref kernel_init(void *unused)
 {
@@ -845,7 +858,7 @@ static int __ref kernel_init(void *unused)
               "See Linux Documentation/init.txt for guidance.");
 }
 
-static void __init kernel_init_freeable(void)
+static noinline void __init kernel_init_freeable(void)
 {
         /*
          * Wait until kthreadd is all set-up.
@@ -900,4 +913,7 @@ static void __init kernel_init_freeable(void)
          * we're essentially up and running. Get rid of the
          * initmem segments and start the user-mode stuff..
          */
+
+        /* rootfs is available now, try loading default modules */
+        load_default_modules();
 }